
Concept explainers
(a)
Interpretation:
Whether the entropy of the system increases or decreases when pure gases are mixed to prepare an anesthetic is to be determined.
Concept introduction:
The entropy is the
(b)
Interpretation:
Whether the entropy of the system increases or decreases when electronic-grade silicon is prepared from sand is to be determined.
Concept introduction:
The entropy is the thermodynamic function that describes the randomness or disorderness of the system. It is represented by
(c)
Interpretation:
Whether the entropy of the system increases or decreases when dry gas sublimes is to be determined.
Concept introduction:
The entropy is the thermodynamic function that describes the randomness or disorderness of the system. It is represented by
Sublimation is the process of conversion of solid directly into gases

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Chapter 13 Solutions
Chemistry: The Molecular Nature of Matter and Change
- Draw the mechanism for the following reaction: CH3 CH3 Et-OH Et Edit the reaction by drawing all steps in the appropriate boxes and connecting them with reaction arrows. Add charges where needed. Electron-flow arrows should start on the electron(s) of an atom or a bond and should end on an atom, bond, or location where a new bond should be created. H± EXP. L CONT. י Α [1] осн CH3 а CH3 :Ö Et H 0 N о S 0 Br Et-ÖH | P LL Farrow_forward20.00 mL of 0.150 M NaOH is titrated with 37.75 mL of HCl. What is the molarity of the HCl?arrow_forward20.00 mL of 0.025 M HCl is titrated with 0.035 M KOH. What volume of KOH is needed?arrow_forward
- 20.00 mL of 0.150 M NaOH is titrated with 37.75 mL of HCl. What is the molarity of the HCl?arrow_forward20.00 mL of 0.025 M HCl is titrated with 0.035 M KOH. What volume of KOH is needed?arrow_forward20.00 mL of 0.150 M HCl is titrated with 37.75 mL of NaOH. What is the molarity of the NaOH?arrow_forward
- Calculate the pH of 0.450 M KOH.arrow_forwardWhich does NOT describe a mole? A. a unit used to count particles directly, B. Avogadro’s number of molecules of a compound, C. the number of atoms in exactly 12 g of pure C-12, D. the SI unit for the amount of a substancearrow_forward5 What would the complete ionic reaction be if aqueous solutions of potassium sulfate and barium acetate were mixed? ed of Select one: O a 2 K SO4 + Ba2 +2 C₂H3O21 K+SO4 + Ba2+ + 2 C2H3O21 K+SO42 + Ba2 +2 C2H3O2 BaSO4 +2 K+ + 2 C2H3O estion Ob. O c. Od. 2 K SO4 +Ba2 +2 C₂H₂O₂ BaSO4 + K+ + 2 C2H3O BaSO4 + K + 2 C2H301 →Ba² +SO42 +2 KC2H3O s pagearrow_forward
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